2015-05-06 20:38 GMT+08:00 Jun Nie jun.nie@linaro.org:

This patch adds zx296702 ASoC DMA audio support. It handle audio dma based on soc-dmaengine

Mark,

Do you have any comments on this patch set? Or you suggest to add HDMI API calling in the same serial patch? For the HDMI calling, I have no good idea except direct call currently. Because I need dts hook to audio driver, while no HDMI call back data can be shared from video side to audio side in this independent initialization case.

Jun

Signed-off-by: Jun Nie jun.nie@linaro.org

sound/soc/Kconfig | 1 + sound/soc/Makefile | 1 + sound/soc/zte/Kconfig | 8 ++++++++ sound/soc/zte/Makefile | 1 + sound/soc/zte/zx296702-pcm.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ sound/soc/zte/zx296702-pcm.h | 6 ++++++ 6 files changed, 63 insertions(+) create mode 100644 sound/soc/zte/Kconfig create mode 100644 sound/soc/zte/Makefile create mode 100644 sound/soc/zte/zx296702-pcm.c create mode 100644 sound/soc/zte/zx296702-pcm.h

diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig index 3ba52da..e2828e1 100644 --- a/sound/soc/Kconfig +++ b/sound/soc/Kconfig @@ -57,6 +57,7 @@ source "sound/soc/tegra/Kconfig" source "sound/soc/txx9/Kconfig" source "sound/soc/ux500/Kconfig" source "sound/soc/xtensa/Kconfig" +source "sound/soc/zte/Kconfig"

# Supported codecs source "sound/soc/codecs/Kconfig" diff --git a/sound/soc/Makefile b/sound/soc/Makefile index 974ba70..57bf32d 100644 --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -38,3 +38,4 @@ obj-$(CONFIG_SND_SOC) += tegra/ obj-$(CONFIG_SND_SOC) += txx9/ obj-$(CONFIG_SND_SOC) += ux500/ obj-$(CONFIG_SND_SOC) += xtensa/ +obj-$(CONFIG_SND_SOC) += zte/ diff --git a/sound/soc/zte/Kconfig b/sound/soc/zte/Kconfig new file mode 100644 index 0000000..392ffa6 --- /dev/null +++ b/sound/soc/zte/Kconfig @@ -0,0 +1,8 @@ +config SND_SOC_ZX296702

•   tristate "SoC Audio for the ZX296702 System-on-Chip"
  

•   depends on SOC_ZX296702 || COMPILE_TEST
  

•   depends on COMMON_CLK
  

•   select SND_SOC_GENERIC_DMAENGINE_PCM
  

•   help
  

•     Say Y or M here if you want support for SoC audio on ZX296702
  

•     chip.
  

diff --git a/sound/soc/zte/Makefile b/sound/soc/zte/Makefile new file mode 100644 index 0000000..f2a6af8 --- /dev/null +++ b/sound/soc/zte/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_SND_SOC_ZX296702) += zx296702-pcm.o diff --git a/sound/soc/zte/zx296702-pcm.c b/sound/soc/zte/zx296702-pcm.c new file mode 100644 index 0000000..6e1a61a --- /dev/null +++ b/sound/soc/zte/zx296702-pcm.c @@ -0,0 +1,46 @@ +/*

• • Copyright (C) 2015 Linaro
• • Author: Jun Nie jun.nie@linaro.org
• • License terms: GNU General Public License (GPL) version 2
• */

+#include <linux/device.h> +#include <linux/init.h> +#include <linux/module.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/dmaengine_pcm.h>

+#include "zx296702-pcm.h"

+static const struct snd_pcm_hardware snd_zx_hardware = {

•   .info                   = SNDRV_PCM_INFO_MMAP |
  

•                             SNDRV_PCM_INFO_MMAP_VALID |
  

•                             SNDRV_PCM_INFO_INTERLEAVED |
  

•                             SNDRV_PCM_INFO_PAUSE |
  

•                             SNDRV_PCM_INFO_RESUME |
  

•                             SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
  

•   .period_bytes_min       = 32,
  

•   .period_bytes_max       = 16 * 1024,
  

•   .periods_min            = 2,
  

•   .periods_max            = 32,
  

•   .buffer_bytes_max       = 64 * 1024,
  

+};

+static const struct snd_dmaengine_pcm_config zx_dmaengine_pcm_config = {

•   .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
  

•   .pcm_hardware = &snd_zx_hardware,
  

•   .prealloc_buffer_size = 64 * 1024,
  

+};

+int zx_pcm_platform_register(struct device *dev) +{

•   return devm_snd_dmaengine_pcm_register(dev, &zx_dmaengine_pcm_config,
  

•                   0);
  

+} +EXPORT_SYMBOL_GPL(zx_pcm_platform_register);

+MODULE_LICENSE("GPL"); diff --git a/sound/soc/zte/zx296702-pcm.h b/sound/soc/zte/zx296702-pcm.h new file mode 100644 index 0000000..4809a38 --- /dev/null +++ b/sound/soc/zte/zx296702-pcm.h @@ -0,0 +1,6 @@ +#ifndef _ZX_PCM_H +#define _ZX_PCM_H

+int zx_pcm_platform_register(struct device *dev);

+#endif

1.9.1